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Salvelinus Profundus
''Salvelinus profundus'' ( 'Deepwater char') is a deepwater char species found only in deep areas of Lake Constance. This fish can reach in length and has a blunt snout with the mouth in subinferior position. Its lower fins have no white margins and its flanks are silvery to yellowish with pale blue spots; the belly can have a reddish color. History ''Salvelinus profundus'' was still a commercial species in the 1960s but the eutrophication of Lake Constance, which began in the 1950s and peaked in 1979, is thought to have affected egg development. Surveys undertaken in the last ten years failed to find any evidence of the survival of this deep-water trout, as well as of the Lake Constance whitefish ('' Coregonus gutturosus''), another fish species driven recently to extinction. The species had been reported extinct since the late 1970s but was officially declared so by the IUCN The International Union for Conservation of Nature (IUCN) is an international organization working ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coregonus Gutturosus
''Coregonus gutturosus'', the Lake Constance whitefish, is an extinct species of whitefish in the salmon family Salmonidae. It was formerly found only in deep areas of Lake Constance in the Alps. Extinction ''Coregonus gutturosus'' was a deep water whitefish that reached a length of . ''Coregonus gutturosus'' was highly sensitive to environmental changes and it is thought that the eutrophication Eutrophication is a general term describing a process in which nutrients accumulate in a body of water, resulting in an increased growth of organisms that may deplete the oxygen in the water; ie. the process of too many plants growing on the s ... of Lake Constance, which peaked in 1979, irreversibly affected the development of the eggs of the species. Surveys undertaken at the start of the 21st century failed to find any evidence of the survival of the Lake Constance whitefish. References gutturosus Fish described in 1818 Freshwater fish of Europe Lake Constance Cold w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alfred Schillinger
Alfred may refer to: Arts and entertainment *''Alfred J. Kwak'', Dutch-German-Japanese anime television series * ''Alfred'' (Arne opera), a 1740 masque by Thomas Arne * ''Alfred'' (Dvořák), an 1870 opera by Antonín Dvořák *"Alfred (Interlude)" and "Alfred (Outro)", songs by Eminem from the 2020 album ''Music to Be Murdered By'' Business and organisations * Alfred, a radio station in Shaftesbury, England *Alfred Music, an American music publisher *Alfred University, New York, U.S. *The Alfred Hospital, a hospital in Melbourne, Australia People * Alfred (name) includes a list of people and fictional characters called Alfred * Alfred the Great (848/49 – 899), or Alfred I, a king of the West Saxons and of the Anglo-Saxons Places Antarctica * Mount Alfred (Antarctica) Australia * Alfredtown, New South Wales * County of Alfred, South Australia Canada * Alfred and Plantagenet, Ontario ** Alfred, Ontario, a community in Alfred and Plantagenet * Alfred Island, Nunavut * Moun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salvelinus
''Salvelinus'' is a genus of Salmonidae, salmonid fish often called char or charr; some species are called "trout". ''Salvelinus'' is a member of the subfamily Salmoninae within the family Salmonidae. The genus has a northern circumpolar distribution, and most of its members are typically cold-water fish that primarily inhabit fresh waters. Many species also migrate to the sea. Most char may be identified by light-cream, pink, or red spots over a darker body. Scales tend to be small, with 115–200 along the lateral line. The pectoral, pelvic, anal, and the lower aspect of caudal fins are trimmed in snow white or cream leading edges. Many members of this genus are popular sport fish, and a few, such as lake trout (''S. namaycush'') and arctic char (''S. alpinus'') are objects of commercial fisheries and/or aquaculture. Occasionally such fish escape and become invasive species. Deepwater char are small species of char living below 80 m in the deep areas of certain lakes. They ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Constance
Lake Constance (, ) refers to three bodies of water on the Rhine at the northern foot of the Alps: Upper Lake Constance (''Obersee''), Lower Lake Constance (''Untersee''), and a connecting stretch of the Rhine, called the Seerhein (). These waterbodies lie within the Lake Constance Basin () in the Alpine Foreland through which the Rhine flows. The nearby '' Mindelsee'' is not considered part of Lake Constance. The lake is situated where Germany, Switzerland, and Austria meet. Its shorelines lie in the German states of Baden-Württemberg and Bavaria; the Swiss cantons of St. Gallen, Thurgau, and Schaffhausen; and the Austrian state of Vorarlberg. The actual locations of the country borders within the lake are disputed. The Alpine Rhine forms, in its original course ( Alter Rhein), the Austro-Swiss border and flows into the lake from the south. The High Rhine flows westbound out of the lake and forms (with the exception of the Canton of Schaffhausen, Rafzerfeld and Bas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eutrophication
Eutrophication is a general term describing a process in which nutrients accumulate in a body of water, resulting in an increased growth of organisms that may deplete the oxygen in the water; ie. the process of too many plants growing on the surface of a river, lake, etc., often because chemicals that are used to help crops grow have been carried there by rain. Eutrophication may occur naturally or as a result of human actions. Manmade, or cultural, eutrophication occurs when sewage, Industrial wastewater treatment, industrial wastewater, fertilizer runoff, and other nutrient sources are released into the environment. Such nutrient pollution usually causes algal blooms and bacterial growth, resulting in the depletion of dissolved oxygen in water and causing substantial environmental degradation. Many policies have been introduced to combat eutrophication, including the United Nations Development Program (UNDP)'s sustainability development goals. Approaches for prevention and re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Extinct
Extinction is the termination of an organism by the death of its Endling, last member. A taxon may become Functional extinction, functionally extinct before the death of its last member if it loses the capacity to Reproduction, reproduce and recover. As a species' potential Range (biology), range may be very large, determining this moment is difficult, and is usually done retrospectively. This difficulty leads to phenomena such as Lazarus taxon, Lazarus taxa, where a species presumed extinct abruptly "reappears" (typically in the Fossil, fossil record) after a period of apparent absence. Over five billion species are estimated to have died out. It is estimated that there are currently around 8.7 million species of eukaryotes globally, possibly many times more if microorganisms are included. Notable extinct animal species include Dinosaur, non-avian dinosaurs, Machairodontinae, saber-toothed cats, and mammoths. Through evolution, species arise through the process of specia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IUCN
The International Union for Conservation of Nature (IUCN) is an international organization working in the field of nature conservation and sustainable use of natural resources. Founded in 1948, IUCN has become the global authority on the status of the natural world and the measures needed to safeguard it. It is involved in data gathering and Data analysis, analysis, research, field projects, advocacy, and education. IUCN's mission is to "influence, encourage and assist societies throughout the world to conserve nature and to ensure that any use of natural resources is equitable and ecologically sustainable". Over the past decades, IUCN has widened its focus beyond conservation ecology and now incorporates issues related to sustainable development in its projects. IUCN does not itself aim to mobilize the public in support of nature conservation. It tries to influence the actions of governments, business and other stakeholders by providing information and advice and through buildin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Swiss Federal Institute Of Aquatic Science And Technology
The Swiss Federal Institute of Aquatic Science and Technology (Eawag, German acronym for ''Eidgenössische Anstalt für Wasserversorgung, Abwasserreinigung und Gewässerschutz'') is a Swiss water research institute and an internationally networked institution. As part of the Swiss Federal Institutes of Technology Domain, it is an institution of the Federal Department of Home Affairs of the Swiss Confederation. The Eawag is based in Dübendorf near Zurich and Kastanienbaum near Lucerne. After its foundation in 1936 it concentrated on wastewater treatment and drinking water supplies. From these beginnings it has expanded into a multidisciplinary research institute with a focus on three primary research areas: water as a foundation of health and well-being, water as an essential factor in the functioning of our ecological systems, and strategies for the mitigation of water use conflicts. Nowadays, with a staff of over 500 employees, Eawag is actively engaged in research, teaching ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Neuchâtel
Lake Neuchâtel ( ; ; ) is a lake primarily in Romandy, the French-speaking part of Switzerland. The lake lies mainly in the canton of Neuchâtel, but is also shared by the cantons of Vaud, Fribourg, and Bern. It comprises one of the lakes in the Three Lakes Region (French: ''Pays des Trois-Lacs'', German: ''Drei-Seen-Land''), along with lakes Biel/Bienne and Morat/Murten. With a surface of , Lake Neuchâtel is the largest lake located entirely in Switzerland and the 59th largest lake in Europe. It is long and at its widest. Its surface is above sea level, and the maximum depth is . The total water volume is . The lake's drainage area is approximately and its culminating point is Le Chasseron at . In comparison to the Lake Geneva region, the Lake Neuchatel shoreline has experienced significant economic development with the completion of the regional motorway network. It is also known to have housed a Celtic agglomeration on pile-dwellings called La Tène and which gives ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salvelinus Neocomensis
''Salvelinus'' is a genus of salmonid fish often called char or charr; some species are called " trout". ''Salvelinus'' is a member of the subfamily Salmoninae within the family Salmonidae. The genus has a northern circumpolar distribution, and most of its members are typically cold-water fish that primarily inhabit fresh waters. Many species also migrate to the sea. Most char may be identified by light-cream, pink, or red spots over a darker body. Scales tend to be small, with 115–200 along the lateral line. The pectoral, pelvic, anal, and the lower aspect of caudal fins are trimmed in snow white or cream leading edges. Many members of this genus are popular sport fish, and a few, such as lake trout (''S. namaycush'') and arctic char (''S. alpinus'') are objects of commercial fisheries and/or aquaculture. Occasionally such fish escape and become invasive species. Deepwater char are small species of char living below 80 m in the deep areas of certain lakes. They are hig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cold Water Fish
The term coldwater fish can have different meanings in different contexts. * In the context of fishkeeping, it refers to ornamental fish species that tolerate the temperatures of a typical indoor aquarium well and do not require a heater to remain active, as opposed to tropical fish whom need a heater to survive in the room temperatures of temperate climates; * In the context of ecology and fishing, it refers to fish species that prefer to inhabit waterbodies or depth zones with much lower temperatures than the average temperate water. Salmonids (e.g. salmon, trout, char and graylings) are a classic example of such types of fish. Fishkeeping Most or all ornamental fish species are able to tolerate temperatures as low as or lower than room temperature, with most stenothermic tropical species having critical thermal minimums of around 10-12 °C. Although these fish are capable of surviving in unheated aquaria, their temperature preferences may vary. For example, koi, gol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxa Named By Alfred Schillinger
In biology, a taxon (back-formation from ''taxonomy''; : taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular name and given a particular ranking, especially if and when it is accepted or becomes established. It is very common, however, for taxonomists to remain at odds over what belongs to a taxon and the criteria used for inclusion, especially in the context of rank-based (" Linnaean") nomenclature (much less so under phylogenetic nomenclature). If a taxon is given a formal scientific name, its use is then governed by one of the nomenclature codes specifying which scientific name is correct for a particular grouping. Initial attempts at classifying and ordering organisms (plants and animals) were presumably set forth in prehistoric times by hunter-gatherers, as suggested by the fairly sophisticated folk taxonomies. Much later, Aristotle, and later still ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
